초록

Document binarization is an active research areafor many years. Binarization algorithms play an important rolein the preprocessing phase of any character recognition system.This paper compares several alternative binarization algorithmsfor handwritten documents, by evaluating their performance.The algorithms evaluated are, global thresholding, Otsuthresholding, Kittler-Illingworth and local thresholding,Niblack algorithm along with the proposed PSO algorithm.From the tests and results, we can wrap up with the assumptionthat the proposed algorithm shows improved results.